Set slave_load_path to ../../var/tmp in version prior to 5.0 to be compatible...

Set slave_load_path to ../../var/tmp in version prior to 5.0 to be compatible with mysql-test-run.sh

mysql-test/mysql-test-run.pl

@@ -3068,8 +3068,13 @@ sub mysqld_arguments ($$$$$) {
     # Directory where slaves find the dumps generated by "load data"
     # on the server. The path need to have constant length otherwise
     # test results will vary, thus a relative path is used.
+    my $slave_load_path= "../tmp";
+    if ( $mysql_version_id < 50000 )
+    {
+      $slave_load_path= "../../var/tmp";
+    }
     mtr_add_arg($args, "%s--slave-load-tmpdir=%s", $prefix,
-                "../tmp");
+                $slave_load_path);
     mtr_add_arg($args, "%s--socket=%s", $prefix,
                 $slave->[$idx]->{'path_sock'});
     mtr_add_arg($args, "%s--set-variable=slave_net_timeout=10", $prefix);